Electronic apparatus for biological research Electronic apparatus for biological research electronicappara00dona Year: 1958 Flexible metal diaphragm Movable anode Operating ' shaft Metal shell connected to anode

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Size: 1585px × 1261px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage